You are going to draw two candy bars from a large bag containing 25 Snickers bars and 7 Twix bars. (Assume you are going to keep the candy bars.) Tell whether the two draws are independent or dependent. __________ What is the probability that both candy bars you draw from the bag are Snickers? __________ (Round to three decimal places.)     You want to find the probability of rolling a sum of 8 on two dice and then rolling a sum of 9 on the next roll. Tell whether these events are independent or dependent. __________ Calculate the probability __________ (Round to three decimal places.)
Â
Question 2: (1 point) 7B Homework Help Table
Â	Textbook Examples	Â	Textbook Homework Sections	Â	Tutorial Videos	Â	InterAct Math Practice
Â	Â	Â	1 and 1 Free Throw Probability	Â	(click here)	Â	Â

Suppose a women’s college basketball player is fouled in a one-and-one situation (meaning she is awarded two free throws only if she makes her first one and awarded one point for each shot made). 
  
Knowing that her season average is 75%, what is the probability that she will not get any points?  Answer with a percentage rounded to 2 decimal places.
__________% 
 


Question 3: (2 points)

7B Homework Help Table   Textbook Examples   Textbook Homework Sections   Tutorial Videos   InterAct Math Practice   Ex 6-7 (p.429-431)   (21-26) EITHER/OR Probabilities   (click here)    Exercise 21

 

You want to know the probability that you will roll doubles or a sum of four with two dice. Tell whether these events are overlapping or non-overlapping.
__________

Compute the probability.  

__________

(Round to three decimal places.)

 

If you toss four coins, what is the probability that you will get exactly 1 or 3 heads? Tell whether these events are overlapping or non-overlapping.

__________
Compute the probability.  

__________

(Round to three decimal places.)
 

 

Question 4: (1 point)

7B Homework Help Table   Textbook Examples   Textbook Homework Sections   Tutorial Videos   InterAct Math Practice   Ex 9-10 (p.432)   (27-32)  At Least Once Probabilities       Exercise 31   Henry is a basketball player, and the probability that he makes any given free throw is about 65%. What is the probability that he will make one or more of his next 3 free throws?  Answer with a percentage rounded to the nearest tenth of a percent. ____________%

 


Question 5: (1 point)

7B Homework Help Table   Textbook Examples   Textbook Homework Sections   Tutorial Videos   InterAct Math Practice       (57-58) OR Probabilities from a Table   (click here)    Exercise 57

 

The table below shows the ethnicity and gender of a group of people waiting for a bus at the bus stop. Use the information in the table to determine the probability that someone selected randomly from the group will be male or Hispanic.  Give your answer as a percentage rounded to the nearest tenth of a percent.
 

Â	Caucasian	Hispanic	African American	Asian
Men	11	23	7	25
Women	21	14	41	37

__________%

 

 

Question 6: (1 point)

7B Homework Helps Textbook Examples   Textbook Homework Sections   Tutorial Videos   InterAct Math Practice Ex 7E: 8a (p.462-3)       (click here)    Exercise 22 (7E) (1st part only)

If there are 20 students (in addition to yourself) in your math class, what is the probability that at least one of them shares your birthday? Answer with a percentage rounded to the nearest tenth of a percent.
__________% 

 

Question 7: (4 points)

 

Textbook Examples	Â	Textbook Homework Sections	Â	Tutorial Videos	Â	InterAct Math Practice
3E: Ex 3 (p.175)	Â	(3E: 17-18 and 23) ApplicationsÂ	Â	(click here)	Â	Exercise 17 (3E)

 

Suppose a certain sports league has a strict no drinking policy. The 6,000 players of the league are given a polygraph during which they are asked whether they have taken a drink in the last three months. All of them deny drinking but in actuallity 1% of the players are delinquent. Use the table below to answer the following questions. This table assumes that a polygraph is 70% accurate.

 

Â	Player Is Lying	Player Is Truthful	Total
Polygraph Finds Player Lying	42	1,782	1,824
Polygraph Finds Player Truthful	18	4,158	4,176
Total	60	5,940	6,000

 

The first two answers below should be percentages rounded to the nearest tenth of a percent.

Suppose the polygraph results found the player is lying. What is the chance that he/she really is lying?  

____________%

 

What is the chance the polygraph results finds the player is lying, given that the player is lying?  

____________%

 

Suppose polygraph results found player truthful.  What is the chance that he/she is lying?  Give this answer as a percentage rounded to two decimal places.

____________%

 

What is the chance the polygraph results finds the player lying, given that the player is truthful?  Answer with a percentage rounded to the nearest tenth.

____________%

 

 

 

Question 8: (1 point)

Textbook Examples	Â	Textbook Homework Sections	Â	Tutorial Videos	Â	InterAct Math Practice
3E: Ex 3-4 (p.175-6)	Â	(3E: Quick Quiz 4-5)	Â	(click here)Â	Â	Exercise QQ5

 

Match the following with the appropriate term:

 

 If a person tested positive for steroids and actually took steroids it is considered to be a __________.